Blog and categories

Hello I created 3 categories for blog part on my website which I used a widget for each category : https://fredericvoyage.fr/en/the-blog/ On the page "the-blog, I selected all categories. So, we navigate to all post within the 3 categories. Is it possible to have a specific page for each category. For example, when I click on the category "Minds", I would want to navigate only on the post tagged "Minds". The same with the categories "Post" and "Themes". Other question: On blog part, by the link of the menu, the nav is on the top. When I use a link inside a widget, the nav are on the bottom. Is it possible to configure to have the nav on the top too ? Thanks a lot for your help Kind regards Frederic